SELECTION BY WINDOW DOESN'T SELECT EVERYTHING

PROBLEM

Selection by window (bottom left to upper right) or window crossing (upper right to lower left) doesn't select everything.

But you can select things individually.

CAUSE

The View Range Primary Range: Bottom doesn't include the elements you are selecting.

You can see the objects because the View Depth setting does include them.

SOLUTION

Change Primary Range: Bottom to match View Depth.